What does it mean when your pregnant guinea pig starts bleeding?

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I bought her a little more than 2 weeks ago. She’s pregnant. Now she is bleeding! I thought she was going into labor but it doesn’t mention bleeding on any site? Should I take her to the vet? Or let her do her thing?

DEFINATLY TAKE HER TO THE VET.
She may be having a miscarriage. I would take her to the vet immidiately because many guinea pigs die from complications during pregnancy. She will likely die without vet intervention if she is bleeding.